Cutter-head.



K. S. PAUCETTE.

CUTTER HEAD. APPLICATION FILED DEC 14, 1905.

Patented Jan. 2, 1912.

0 1L r g m i U K W/ T/VE SSE S Mai i;

KARL SCHURZ FAUCETTE, bF PORTLAND, OREGON.

CUTTER-HEAD.

To all whom it may concern:

,Be it known that I, KARL citizen of the United States, and a residentof Portland, in the county of Multnomah and State of Oregon, haveinvented a new and Improved Cutter-Head, of which the following is afull, clear, and exact description.

This invention relates primarily to cutter heads designed to be used inconnection with wood planing machines, and has for its object to providemeans adapted to firmly clamp the cutters and hold them against anyvibration or springing, to enable the cutters to be adjusted to extremesfor taking up the wear arising from grinding the cutters, and to enablethin cutters to be used instead of the heavy ones now commonly used.

Two important points must be kept in mind in the construction ofcutter-heads:

S. FAUoE'rrn, a

1. The width of the longitudinal channels for the knives and holdingmeans is limited, for cutter-heads are necessarilyvof small diamter-from 6 to 8 inches and there is not much stockavailable out ofwhich to out four longitudinal channels without weakening thecutter-head, and yet foii'r knives are required in order to permit afastfeed, since two knives would require the feed to be only half sofast, and thus very slow. 2. The clamping bars must be of amplethickness so as not to spring under the stress of the clamping screw,for that would cause an inefficient hold of the knives. In applicantsdevice these conditions have all been taken care of. Four knives areprovided, and the clamping means hold the knives rigidly in place, andyet ample stock is left in the cutter-head to insure strength andrigidity.

Other objects relating to the specific construction and specialarrangement of the several parts of my invention will be understood fromthe following description and accompanying drawings, in which drawingsFigure 1 is an end view of a cutter head embodying my invention; Fig. 2is a plan of the same; andFig. 3 is a perspective view of a clampingplate.

As illustrated in the drawings, the cutter head is comprised of acentral or body portion a fixedly secured in any suitable manner to arotatable shaft 6, and provided with longitudinal channels havingoppositely disposed walls, one of which 0 is adapted to bear against andsupport cutters Specification of Letters Patent.

Patented Jan. 23,

Application filed December 14, 1905. Serial No. 291,696.

of which bear at their sides against walls and extend at their cuttingedges beyond the outer portion of retaining members 6, as shown inFig. 1. The cutters d are clamped and held againstthe retaining membersby clamping plates j which are preferably constructed in sections, asshown in Fig. 2, although they may be made entire if desired. The cutterhead is provided with laterally extending longitudinal ribs 6 formed atthe bottom of the channels between the retaining u'icmbers, and withlongitudinal recesses between said ribs 6 and the bottom a of thechannels, which recesses are adapted to receive ribs f ex tendinglaterally from the lower portion f of the clamping plates, and formingrecesses between said ribs f and the body of the clamping plates, asshown in Fig. 1, adapted to receive the laterally extending ribs 0formed in the cutter head at the bottom or lower portion of saidchannels. liy means of such construction the clamping plates are held inlooking engagement with the cutter and heads and adapted to be ad justedlaterally in the cutter heads so as to clamp cutters of varyingthicknesses. Set screws 9 have a threaded engagement with the clampingplates and the heads of the setscrews bear against the wall of thechannel opposite to the wall thereof retaining the cutters as shown inF 1. If desired,

the clamping plates f may be provided with an outwardly extending flangeor rib 1' continuous with the face of the clamping plates therebylnoreasing the bearing surface of the clamping plates on the cutterswithout extending unnecessarily. the body of the clamping plates. Bymeans of such construction the set screws may be readily adjusted in theclampingqalates and held against loosening by the adjacent walls of thelongitudinal channels. The cutters are kept clamped firmly and uniformlyon both sides, exposing only the edge of the cutters, thus holding thecutters against vibration or springing in the cutter headand theconsequent disadvantages which commonly follow said springing orvibration of the cutters. By means of this construction moreover. thincutters may be employed thereby avoiding the necessity and disadvantagesof the heavy cutters heretofore used. And the cutters maybe adjusted toextremes for taking up the vmar consequent from grinding the cutterswhich operation cannot be performed in the construction t ion.

aommonly used owing to the slots in the cuttars which limit the range ofadjustability.

In the construction herein shown and describcd,'l have embodied myinvention in its preferred form. I do not desire to be limited to suchconstruction, however, as other means having similar capabilities may beused without departing from my inven- I claim: 1. The combination of acutter head having a longitudinal channel, a clamping bar adjustable inthe channel, interlocking means between the bar-and the bottom of thechannel, a cutter between the bar, and one wall of the channel, andscrews in the bar with their heads engaging the outer wall of thechannel.

Z. A cutter head having ailongltudinal cl'ianneha longitudinal rib atthe bottom of...

said channel, a clamping plate adjustable laterally in said channel andprovided on its lower portion with a rib extending laterally -therefrominline with the bottom of said clamping plate and adapted to interlockwith said rib of the head, a cutter be-' tween said bar and one wall of-thc channel,

' and screws in thebar with their heads enad ustable laterally in saidchannel'an I other well of the channel.

gagin the outer wall of the channel.

3. A cutter head'comprising longitudinal retaining membersandlongitudinal channels intermediate thereof clamping bars latorallyadjustable in said channels, interlocking means bctween said bars andthe bar and one wall of the channel, and screws in the bar with theirheads cngagingthe 5.'A cutter head having a longitudinal channel,provided with oppositely disposed walls and a pi'oj'ectin rib formedinthe cutter head and space' from the, bot-toin of said channel, aclamping bar provided, on

its lower portion with a'project'ing rib, and

a recess above said rib corresponding with said ribof the cutterhead,afcutter' fbe' tween the bar and one wall of said channel, and screws inthe bar with theirheads engaging the otherwall' of the channel.

6. A cutter head provided withlongitudinal channels having oppositelydisposed side walls, and a longitudinally 'extending rib forming arecess at" the bottom of said channel, a clamping'baradjustahle steadyinthe channel and provided on its lower ortion with a rib and a recesscorrespondmg with said recess 'andrib respectively of the cutter head,sputter between the bar- '8. The combination of a cutter head cyl--inder having a longitudinal channel for receiving a cutter, a clampingbar adjustable inthe channel, for engaging the cutter, interlockingmeans between the bar and the channel, and a set-screw screwing in theclamping bar and bearing with its head against the-opposite wall of thechannel.

9. The combination of a cutter head having' a longitudinal channel forreceiving a cutter, a clamping bar adjustable in the channebfor' engaginthe cutter, interlocking means between t e bar and the bottom \of thechannel, 'a' screw or screws in the bar with the head or heads thereofengaging the outer wall of the channel.

10. The combination of a cutter head having a lon itudinal channel forreceiving a cutter, a l aterally projectingv flange on one wall of saidchannel and spaced from the bottom thereof, a clamping bar laterallvadjustable'in said channel, a laterally extending flange on saidclamping bar arranged to be inserted under and interlock with saidflange of said Wall, a screw or screws insorted in said clamping barwith the head or heads thereof engaging the outer wall of said channel.v v

11.,The combination of a cutter head formed with. a'longitudinal channelfor receiving a cutter, a clamping bar adjustable .in suclrchannel andadapted for engaging acutter, a set screw threaded into the clamp ingbar, and bearing with its head against the outer wall of the channel,and means locking the clamping bar against centrifugal displacement soarranged as to permit ready access to said set screw.

Intestim'ony whereof I have signed my name tothis specification in thepresence of two subscribing witnesses,

, KA L sonunz FAUCETTE.

Witnesses: l

W. H. Boron, Vanommn SETON.

a longitudinal

